Problems in address distribution in DHCP
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While it is possible to pass vlan tags across a dumb switch - since it doesn't understand the tags.. There will be no isolation on that switch... All broadcast will go over all ports no matter the vlan it is suppose it suppose to be in.
Just because a dumb switch might not actually strip a tag, doesn't mean its good idea to run vlans over such a device...
If your going to use vlans than all your devices should support vlans - other than you can leverage dumb switches that are access level switches where only clients in the same vlan will be connected, and the only vlan that will go to that end switch is in a specific vlan... Ie as a downstream switch from a smart switch.. But no other vlans should cross over that switch.
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I will tell you what I want to do as best I can explain and you will tell me whether it will work or not. OK?
- All my AP supports VLANs and multiple SSIDs.
- I have a smart switch that is the first and the main. The rest are not smart switches.
I want to pass a VLAN tagged from the main switch
Will pass through the non-smart switches to the APs. Then the APs will take the VLAN tagged, without damaging the rest of the network. Will it work? -
Why do you have to pass the AP across the dumb switch? Connect it to the smart switch... If you need the switch as an extension for the run - pick up a 40$ smart switch to use and hang your dumb switch off that.
Can you run the vlan tags across the dumb switch - more than likely they will not strip it... But what they will do since they do not understand vlans is all clients on this dumb switch will see all broadcast traffic from every vlan that cross over that switch. And any client on that dumb switch could just add a tag and join any vlan they want.
It is NOT how you run a network!!!
You might get away with this if your order of smart switches got delayed and you had to bring this up NOW or loose money because production is down and all you have is some dumb switch to use.. But this not how anyone who works in IT would do it... you might as well just run 1 flat network if this is how your going to run a network.
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@johnpoz I can not replace all the non-smart switches there are too many such a network that literally size more than 300 stationary computers connected to it !!!
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@itay1787 said in Problems in address distribution in DHCP:
@johnpoz I can not replace all the non-smart switches there are too many such a network that literally size more than 300 stationary computers connected to it !!!
I believe he suggested running a cable from the AP to managed switch. Is that not possible? How many APs are we talking about?
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@jknott It really is not possible
There are about 10 to 12 AP -
@itay1787 said in Problems in address distribution in DHCP:
@jknott It really is not possible
There are about 10 to 12 APAny chance you could have just the APs on a dumb switch?
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@jknott said in Problems in address distribution in DHCP:
VLAN tagging will pass through dumb switches.
if you are lucky. more often they just vanish, or get corrupted.
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@heper said in Problems in address distribution in DHCP:
if you are lucky. more often they just vanish, or get corrupted.
Any switch that does that is defective. A switch is supposed to pass any and all valid Ethernet frames. A valid Ethernet frame consists of destination & source MACS, payload and CRC. What distinguishes a VLAN frame from others is the contents of the Ethertype/length field. The VLAN tag is carried in the payload area and should not be touched by a switch. The exception being managed switches configured for VLANs, which create, forward and remove the VLAN frames. There is absolutely no reason why an unmanaged switch would handle a VLAN frame differently than any other. The only exception would be ancient gear that cannot handle Ethernet payloads greater than 1500 bytes. If you run into switches like that, then just reduce MTU to 1496 to avoid the problem.
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In the next few days I'm going to try to run the VLANs from the main switch and send it over the network via VLAN tagged. And see if the APs will work with it and that the rest of the network will be OK .....
Now I remembered having AP that they are in client mode so I have to check what to do with it.
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What are these AP exact make and model? Client Mode doesn't sound like an AP that supports vlans to me ;)
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@johnpoz said in Problems in address distribution in DHCP:
What are these AP exact make and model?
I can not tell you right now, I'm not there. But in two days I'll be there and tell you.
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@johnpoz said in Problems in address distribution in DHCP:
What are these AP exact make and model?
Wavion: WBS-2400 SCT-120-FCC
Planet: WNAP-1110
TP-Link: TL-WA7210N
EnGenius: EAP1200H
EnGenius: ENS202EXT
D-Link: DAP 1360
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So a standard is just nowhere at all? So was it like the school asked the students to donate their old home shit?
The TL-WA7210N is an outdoor device - more designed for WISP.. It does have a multi-ssid mode, which from my 2 second breeze over of the manual would mean it needs to be in that mode to do that vs say the "client mode" you mentioned.
The DAP‑1360 is a N repeater for gosh sake... Makes ZERO mention of vlan support.
Really a WBS-2400 SCT-120-FCC, So how about you go into a bit more on this wifi deployment - and how internet is actually brought into the location... So your on a WISP? for internet? You provide internet to remote building via wifi? etc.
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@johnpoz said in Problems in address distribution in DHCP:
So a standard is just nowhere at all?
There are no standards in anything !! And this is really a problem but there is nothing to do.
So was it like the school asked the students to donate their old home shit?
The TL-WA7210N is an outdoor device - more designed for WISP.. It does have a multi-ssid mode, which from my 2 second breeze over of the manual would mean it needs to be in that mode to do that vs say the "client mode" you mentioned.
All of the APs I've listed above are used for school. Some in client and some in AP
So regarding these TP-Link, I'll have to think about how to move a cable there with we want VLANsThe DAP‑1360 is a N repeater for gosh sake... Makes ZERO mention of vlan support.
The DAP-1360 currently managed to flip all but one used as a client mode but it only gets WiFi. - He can not do some things at the same time Do not forget yet it's about D-Link Do not expect too much.
Really a WBS-2400 SCT-120-FCC, So how about you go into a bit more on this wifi deployment - and how internet is actually brought into the location... So your on a WISP? for internet? You provide internet to remote building via wifi? etc.
Internet access to this school comes through Fiber
There are 4 such wavion of the same type, from the same model. And each institute for different places should give a reception of WiFi. These are the main APs. It's not something new they've been around for about 7 years - hoping to replace them in the coming months but right now there's no talk about it.
Hope I answered everything.
